Jason O'Byrne - Feb 8, 2022 Form 4 Insider Report for Caribou Biosciences, Inc. (CRBU)

Role
Chief Financial Officer
Signature
/s/ Barbara G. McClung, as attorney-in-fact
Stock symbol
CRBU
Transactions as of
Feb 8, 2022
Transactions value $
$100,021
Form type
4
Date filed
2/8/2022, 06:27 PM
Previous filing
Dec 21, 2021
Next filing
Feb 23, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CRBU Common Stock Options Exercise $100K +24.3K $4.11 24.3K Feb 8, 2022 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction CRBU Option to purchase Common Stock Options Exercise $0 -24.3K -5.57% $0.00 413K Feb 8, 2022 Common Stock 24.3K $4.11 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 1/4th of the shares subject to this option vested on February 8, 2022 and an additional 1/48th of the aggregate number of shares subject to the option will vest on the corresponding day of each month thereafter until the option is fully vested on February 8, 2025, subject to the reporting person's continued services to the Issuer through the applicable vesting dates.